Reactor Saver Pls help

I want it so that whenever both players enter a zone it activates a counter to activate another counter which deactivates the timer and the countdown light. but the problem is I created a mechanic that when someone enters a zone it ups a counter with the target at one, and when the target is reached it deactivates the repeater. but this mechanic wont work

is this related?

You could use two zones that are connected to a counter with a target of 2 and when the player enters the zone, increment the counter. But when the player leaves the zone the counter is decreased.